... sink, No UV or RF interference, Patented heat sink and optical diffuser, longer than incandescent & fluorescents. No mercury, ... product.The products are in accordance with CE, UL and FCC testing standards. Retro-fit kits available for ... , hospital, schools, factories, commercial lighting, shopping malls, supermarkets, kitchen, display, backlight, home indoor lighting and so on. led flat panel 21W ...